At CSI Engineering LLC, our team comprises skilled engineers and support staff, all with extensive experience in project design and construction administration. Renowned for their excellence, our professionals are leaders in their fields. Based in Portsmouth, situated at the heart of Seacoast NH, CSI Engineering is well-positioned to serve the entire New England Region. Though our primary emphasis is on New England, our project portfolio extends to other states and international locations.
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At CSI Engineering, we're dedicated to designing advanced mechanical systems for the modern building – be it ventilation, heating, equipment analysis, or ductwork installation. We consistently ensure our designs align with state and federal codes and outshine energy-efficiency benchmarks. 
CSI Engineering specializes in crafting exceptional plumbing systems, be it for code compliance, maximizing efficiency, or new construction. We take pride in delivering tailored, energy-efficient systems that always meet regulatory standards, with our clients' needs in mind. 
Whether redesigning a CT scan lab or constructing a large-scale 40,000-square-foot educational institution, CSI Engineering ensures top-tier electrical system designs. Always innovative and efficient, our solutions are timely, within budget, and perfectly tailored for your needs. 
CSI Engineering specializes in designing top-notch fire protection systems for both new buildings and renovations. Utilizing the most advanced fire protection technologies, we bring forth inventive solutions for projects of all sizes. Our engineers manage everything from code assessments to comprehensive fire system overhauls, prioritizing safety and business continuity.
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